In the following question, select the related letters

Select the number from among the given options that can replace the question mark (?) in the following series.

17, 25, 34, 44, 55, ?

Pointing to a lady Jayant says, "She is the sister of Prikshit, who is the brother of Dushyant and the brother of Abha."

Choose one of the following correct combination of mathematical signs which can be filled sequentially to balance the following equation.

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

Identify the image of the image given with the following options:

Statements:

I.  Some doctors are engineers.

II.  All engineers are lawyers.

Conclusions:

From the given option figures, select the one in which the question figure is hidden/embedded. (rotation is not allowed)